21. Strauss C, Cavanagh K, Oliver A, Pettman D. Mindfulness-Based Interventions for People Diagnosed with a Current Episode of an Anxiety or Depressive Disorder: A Meta-Analysis of Randomized Controlled Trials. PLoS ONE 9(4): e96110.

31. Falah Zad H. The effect of cognitive therapy, relaxation, and the combined effect of these two methods in reducing blood pressure in Women 29-25 years old Thran. [Dissertation master]. Khwarizmi University 2003.